/* ==========================================================================
   Garden Plant Finder — Plant Details Page (Mobile-First Layout)
   ========================================================================== */

/* --- Page header -------------------------------------------------------- */

.page-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-md);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.page-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.page-header__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}

.page-header__nav {
  display: none; /* hidden on mobile, shown on desktop */
}

/* --- Buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-sm);
}

.btn--card {
  width: 100%;
  margin-top: var(--space-md);
}

/* --- Layout ------------------------------------------------------------- */

.details-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) var(--space-xl);
}

.details-back-container {
  margin-bottom: var(--space-lg);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition), transform var(--transition);
}

.btn-back:hover {
  color: var(--color-accent-hover);
  transform: translateX(-4px);
}

/* --- Loading and error states ------------------------------------------- */

.details-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.details-state__message {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.details-state__message--error {
  color: #b42318;
}

/* --- Visuals Stack (Mobile Default: Single Column) ----------------------- */

.plant-hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.plant-hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.plant-hero__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: linear-gradient(145deg, #d8f3dc 0%, #b7e4c7 50%, #95d5b2 100%);
}

.plant-hero__image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
}

.plant-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge--safe {
  background: #e6f4ea;
  color: #137333;
}

.badge--warning {
  background: #fef7e0;
  color: #b06000;
}

.badge--info {
  background: #e8f0fe;
  color: #1a73e8;
}

.badge--accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.plant-hero__info {
  display: flex;
  flex-direction: column;
}

.plant-hero__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.plant-hero__subtitle {
  font-size: var(--font-size-base);
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.plant-hero__desc {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.plant-hero__section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-xs);
}

/* --- Specifications Grid (Mobile default: 2 columns) -------------------- */

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs);
}

.spec-card {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.spec-card__icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spec-card__content {
  display: flex;
  flex-direction: column;
}

.spec-card__label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.spec-card__value {
  font-size: 0.75rem;
  color: var(--color-text);
  font-weight: 600;
}

/* --- Care Guides (Mobile default: stacked) ------------------------------ */

.plant-guides {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.guide-block {
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}

.guide-block:hover {
  transform: translateY(-2px);
}

.guide-block--warning {
  border-color: #fce8e6;
  background: #fdf5f5;
}

.guide-block__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.guide-block--warning .guide-block__title {
  color: #c5221f;
}

.guide-block__icon {
  font-size: 1.25rem;
}

.guide-block__text {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text);
}

.guide-block__text p {
  margin-bottom: var(--space-sm);
}

.guide-block__text p:last-child {
  margin-bottom: 0;
}

.guide-block__text strong {
  font-weight: 600;
}

/* --- Similar Plants Section --------------------------------------------- */

.similar-plants {
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-xl);
}

.similar-plants__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.similar-plants__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

/* --- Best Uses (Garden Purpose) ----------------------------------------- */

.guide-block--uses {
  margin-bottom: var(--space-xl);
}

.best-uses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.best-uses-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.best-uses-item:hover {
  border-color: rgba(45, 106, 79, 0.25);
  box-shadow: var(--shadow-sm);
}

.best-uses-item__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.25rem;
  background: var(--color-accent-light);
  border-radius: var(--radius-sm);
}

.best-uses-item__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.best-uses-item__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

@media (min-width: 768px) {
  .best-uses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .best-uses-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Similar Plant Cards Grid (reused from plant-finder) ---------------- */

.plant-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.plant-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.plant-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.plant-card__image {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  display: block;
  background: linear-gradient(145deg, #d8f3dc 0%, #b7e4c7 50%, #95d5b2 100%);
}

.plant-card__image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.plant-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-md);
}

.plant-card__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.plant-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.5;
  flex: 1;
}

.plant-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.plant-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border-radius: 999px;
}

.plant-card__tag strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Global utility for hiding elements */
[hidden] {
  display: none !important;
}

/* ==========================================================================
   Media Queries: Progressive Enhancement
   ========================================================================== */

/* --- Tablet Devices (min-width: 768px) ----------------------------------- */
@media (min-width: 768px) {
  .page-header {
    padding: 0 var(--space-lg);
  }

  .page-header__logo {
    font-size: var(--font-size-lg);
  }

  .page-header__logo-icon {
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
  }

  .details-layout {
    padding: var(--space-lg) var(--space-lg) var(--space-2xl);
  }

  .details-back-container {
    margin-bottom: var(--space-xl);
  }

  .details-state__message {
    font-size: var(--font-size-lg);
  }

  .plant-hero__title {
    font-size: var(--font-size-2xl);
  }

  .plant-hero__subtitle {
    font-size: var(--font-size-lg);
  }

  .plant-hero__desc {
    font-size: var(--font-size-base);
  }

  .specs-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .spec-card {
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }

  .spec-card__icon {
    font-size: 1.5rem;
  }

  .spec-card__value {
    font-size: var(--font-size-sm);
  }

  .plant-guides {
    grid-template-columns: 1fr 1fr;
    display: grid;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
  }

  .guide-block {
    padding: var(--space-lg);
  }

  .guide-block__title {
    font-size: var(--font-size-lg);
  }

  .plant-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .plant-card__body {
    padding: var(--space-lg);
  }

  .plant-card__name {
    font-size: var(--font-size-lg);
  }
}

/* --- Desktop Devices (min-width: 1024px) --------------------------------- */
@media (min-width: 1024px) {
  .page-header {
    padding: 0 var(--space-xl);
  }

  .page-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .details-layout {
    padding: var(--space-xl) var(--space-lg) var(--space-2xl);
  }

  .plant-hero {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
  }

  .specs-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }

  .plant-guides {
    gap: var(--space-xl);
    margin-top: var(--space-xl);
  }

  .guide-block {
    padding: var(--space-xl);
  }

  .plant-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Guides, tools & further reading ------------------------------------ */

.plant-links {
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-xl);
}

.plant-links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.plant-links__heading {
  font-size: var(--font-size-base, 1rem);
  font-weight: 600;
  margin-bottom: var(--space-sm, 0.5rem);
  color: var(--color-text);
}

.plant-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.plant-links__list li {
  margin-bottom: 0.4rem;
}

.plant-links__list a {
  color: var(--color-accent);
}